A bone projectile point found stuck in a mastodon rib in Washington was radiocarbon-dated to 13,800 years old, about 800 years older than the oldest known Clovis artifact.
Sources
- The First Americans - Smithsonian Magazine (smithsonianmag.com)
- https://www.science.org/doi/10.1126/science.1207663 (science.org)
- https://www.sequimgazette.com/2014/03/19/manis-mastodon-reveals-its-secret/ (sequimgazette.com)
- https://archive.archaeology.org/1201/trenches/clovis_buttermilk_creek_manis_mastodon.html (archive.archaeology.org)
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